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Mirrors > Home > HSE Home > Th. List > occon3 | Structured version Visualization version GIF version |
Description: Hilbert lattice contraposition law. (Contributed by Mario Carneiro, 18-May-2014.) (New usage is discouraged.) |
Ref | Expression |
---|---|
occon3 | ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) ↔ 𝐵 ⊆ (⊥‘𝐴))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ococss 30541 | . . . 4 ⊢ (𝐵 ⊆ ℋ → 𝐵 ⊆ (⊥‘(⊥‘𝐵))) | |
2 | 1 | adantl 482 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → 𝐵 ⊆ (⊥‘(⊥‘𝐵))) |
3 | ocss 30533 | . . . 4 ⊢ (𝐵 ⊆ ℋ → (⊥‘𝐵) ⊆ ℋ) | |
4 | occon 30535 | . . . 4 ⊢ ((𝐴 ⊆ ℋ ∧ (⊥‘𝐵) ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → (⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴))) | |
5 | 3, 4 | sylan2 593 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → (⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴))) |
6 | sstr2 3989 | . . 3 ⊢ (𝐵 ⊆ (⊥‘(⊥‘𝐵)) → ((⊥‘(⊥‘𝐵)) ⊆ (⊥‘𝐴) → 𝐵 ⊆ (⊥‘𝐴))) | |
7 | 2, 5, 6 | sylsyld 61 | . 2 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) → 𝐵 ⊆ (⊥‘𝐴))) |
8 | ococss 30541 | . . . 4 ⊢ (𝐴 ⊆ ℋ → 𝐴 ⊆ (⊥‘(⊥‘𝐴))) | |
9 | 8 | adantr 481 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → 𝐴 ⊆ (⊥‘(⊥‘𝐴))) |
10 | id 22 | . . . 4 ⊢ (𝐵 ⊆ ℋ → 𝐵 ⊆ ℋ) | |
11 | ocss 30533 | . . . 4 ⊢ (𝐴 ⊆ ℋ → (⊥‘𝐴) ⊆ ℋ) | |
12 | occon 30535 | . . . 4 ⊢ ((𝐵 ⊆ ℋ ∧ (⊥‘𝐴) ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → (⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵))) | |
13 | 10, 11, 12 | syl2anr 597 | . . 3 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → (⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵))) |
14 | sstr2 3989 | . . 3 ⊢ (𝐴 ⊆ (⊥‘(⊥‘𝐴)) → ((⊥‘(⊥‘𝐴)) ⊆ (⊥‘𝐵) → 𝐴 ⊆ (⊥‘𝐵))) | |
15 | 9, 13, 14 | sylsyld 61 | . 2 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐵 ⊆ (⊥‘𝐴) → 𝐴 ⊆ (⊥‘𝐵))) |
16 | 7, 15 | impbid 211 | 1 ⊢ ((𝐴 ⊆ ℋ ∧ 𝐵 ⊆ ℋ) → (𝐴 ⊆ (⊥‘𝐵) ↔ 𝐵 ⊆ (⊥‘𝐴))) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ↔ wb 205 ∧ wa 396 ⊆ wss 3948 ‘cfv 6543 ℋchba 30167 ⊥cort 30178 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1913 ax-6 1971 ax-7 2011 ax-8 2108 ax-9 2116 ax-10 2137 ax-11 2154 ax-12 2171 ax-ext 2703 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7724 ax-resscn 11166 ax-1cn 11167 ax-icn 11168 ax-addcl 11169 ax-addrcl 11170 ax-mulcl 11171 ax-mulrcl 11172 ax-mulcom 11173 ax-addass 11174 ax-mulass 11175 ax-distr 11176 ax-i2m1 11177 ax-1ne0 11178 ax-1rid 11179 ax-rnegex 11180 ax-rrecex 11181 ax-cnre 11182 ax-pre-lttri 11183 ax-pre-lttrn 11184 ax-pre-ltadd 11185 ax-pre-mulgt0 11186 ax-hilex 30247 ax-hfvadd 30248 ax-hv0cl 30251 ax-hfvmul 30253 ax-hvmul0 30258 ax-hfi 30327 ax-his1 30330 ax-his2 30331 ax-his3 30332 |
This theorem depends on definitions: df-bi 206 df-an 397 df-or 846 df-3or 1088 df-3an 1089 df-tru 1544 df-fal 1554 df-ex 1782 df-nf 1786 df-sb 2068 df-mo 2534 df-eu 2563 df-clab 2710 df-cleq 2724 df-clel 2810 df-nfc 2885 df-ne 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-rmo 3376 df-reu 3377 df-rab 3433 df-v 3476 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-id 5574 df-po 5588 df-so 5589 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-iota 6495 df-fun 6545 df-fn 6546 df-f 6547 df-f1 6548 df-fo 6549 df-f1o 6550 df-fv 6551 df-riota 7364 df-ov 7411 df-oprab 7412 df-mpo 7413 df-er 8702 df-en 8939 df-dom 8940 df-sdom 8941 df-pnf 11249 df-mnf 11250 df-xr 11251 df-ltxr 11252 df-le 11253 df-sub 11445 df-neg 11446 df-div 11871 df-2 12274 df-cj 15045 df-re 15046 df-im 15047 df-sh 30455 df-oc 30500 |
This theorem is referenced by: chsscon2i 30711 chsscon2 30750 |
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